Snatch block



March 1 4, 1933. I ss -n E 1,901,498

SNATCH BLOCK Filed April 21, 1950 Patented Mar. 14, 1933 UNITED STATES sN roH sIlo'cK Application filed April 2 1,

This nvention relates to improvements in snatch blo'cks and has among other objects to provide a new and improved snatch block which may be positively locked n a 'closed E postion or readily opened.

My inventon may be more readily under- ,stoo'd with reference to the accompanyin'g dr'awing wherein: 1 Figure 1 is a plan View of the device' em'- bodyin'g my nvention;

Figura 2 is a side'elevation of the device shown n Fgure 1 with parts broken away and in section; and

P F'gure* 3 is an enlarged fragmentary sectional view taken on line 3-3 of Figure 1.

Like numerais refer olke parts throughout the severa'l' figures.

Referr'ing now n particular to the drawin'g', my n've'ntion i's appl'ed to a sh'eave bl'oclt' of the ui'ck Opening and' closng type' commonly cal ed' a snatch block which* includes a sheave* 10 supported between cheek pl'ates 11- and 12 on a shaft 13 fiXed at its' opposite'ends in said cheek plates. L A Inember 14 is fiXed to the cheek pl'ate 12* and' exten'ds outwa'rdly therefrom n a' plane Parallel wi h* the plane of said cheek plateand has crossheads 15, 15 pivotally connected'theret'o on opposite sdes thereof by means of a pin 16. A shouldered pin' 18 is interposed b'e'tween the crossheads 15, 15 and projects' outw'a'rdly from each side'there'of and* has a cl'evis 19 connected to the outer ends thereof; A Referring now n particular to severai of the' novel features of my invention, the snatch block may be selectively closed or' opened to allow a cable to be nserted therein or removed therefrom by means of a closure O member 20. The closure member 20 is pivotally connected to the crossheads 15, 1 5 at one of its ends by means of a pin 21. An inwardly facing grooved end 22 is formed on the opposite end of the clsure member 20 and s adapted to pas's through an aperture'd po'rtio'n 23 inthe cheek plate 11 and engage' sad cheek plate; the wdth of the groove'in 'said grodye'd end of said closure 'membe'r being equal to'the thicknessflof said' cheek p'ite'so thate'ngagement'of the cheek'plate 11 by the grooye thefgrooved end the ciosure member 20 through -theap'erture '23' forms a means to hold said cl'osure Inem ber to said cheek plate.

Means are' provided topositi ely lock the closure member 20 o the chek pat* 11 ora'llow said 'cl os ure member to* be rmved from' said cheek plate, which xeansherein includes a leaf spring member 25 attached 'co the top side of said closuremembrby rvets 26'a11d eXtending along' said clour member beyond the orward end there'of' a sufficienfu distance to allow said Spring me i ber to' be gripped by band. A stop 2 7 attached to the': under side of the' Spring member 25' adjacent the' end of the, clo'sure member 20 and is adaptedt' engag'e the' ap'f tured portion 23 of the'ch e'e'k pla'te 11. The' wi'dth'of the' stop' 27 and distance from the n's'de edge of the gro'ov'e in the g'rooyed'end 22 of ,the closure memb'er 20 to the end" of said closure mmber is equal t'o the width of the aperture 23 so' that the block may 11106 be' o-pened When the' g'roo'v'ed' end'22 'engage the c'heek p1a't'e'11 and the stop' 27 i's inserted in' the aperture 23 between' the end of the' ISTQ member 20 and the forward' side 'of said' apert'ure A A 4 It may' thus'be sen that .When the groo" n' the groved' end 2'2of the closure Inem ber 20 full 'engages the cheek' plata 1 1 through 'the apertureae that the stop 27 acatari ated by theleaf Spring member 25' regist ales:

withsaid aperture' and h olds'the grooyed nd* 22 of the closure member 20; n engagemenfi With said cheek plate. Whenjf 'desiredjto unlatch the'losure member 20 and open the sn'atch block toins er't or remy'e a roe there fromfth Spring' mmber 25 is lifted ad the st01 j'27 is disengaged from the aperture 2 3'. The closure member' 20is then moyed' for war'dly about" the a'x of theii 1 6 to'disenf gage the groove' "in the grooved' end 225013' said closure membr from the cheel il ate l larid' allow said closure 'member to be opend. See Figure y U hle I have herei'ri Shawn' and describd one form inwhich my'inyentin bee'l A bdied; it will be understod'that the' ar rangeme'nf of the y'arious an'd the con struction thereof maybe altered or changed without departing from the spirit or scope p thereof; Furthermorc, I do not wish to be thereon engageable .withsaid closure 1nem-' ber and an apertured portionin said cheek plate. A

2. A snatch" block having, a plurality of cheek plates, a shea ve supported between said cheek plates, a crosshead pivotally connected to one *of said cheek plates a olosure member connected to said cross head and having selectiveglocking engagement with said other cheek plate, and means for positively looking* said olosure member to said cheek plate comprising a spring member fiXed to said olosure'member, and a stop fiXed to said spring member adj aoent the end of said olosure 1nem-,

ber and engageable with 'said olosure member and an apertured portion in said last V mentioned cheek plate.

3. A snatch block having a plurality of cheek plates, a sheave supported between said cheek platos, a crosshead pivotally connected to one of said cheek platos, a olosure member connected to said cross head and having selectivo looking engagement with said other cheek plate, and means for positivelyy looking said olosure member to said cheek plate oomprising a grooved portion on said olosure member engageablewith said other cheek pla e, a spring member fixed to saidclosure member, and a stop fiXed to said spring member adjacentrthe end of said closure member and engageable with said olosure member and an apertured portion in said last mentioned cheek plate ,for holding said grooVed portion in engagement with said last mentioned cheek plate.

4. A snatch block having a bottom cheek plate, a top cheek plate having an apertured portion formed therein, a sheave supported between said cheek plates, a crosshead having pivotal connection with said bottom cheek plate, a olosure member pivotally connected to said orosshead at one end and having selective looking engagement with said top cheek plate at its other end, said olosure member having a grooved po'rtionformed on said end ha-Ving looking engagement with said top cheek plate which grooved portion is adapted to pass through said apertnred' portion of said top cheek plate and engage said top 5.'A snatch block having a bottom, cheek plate, a top cheek plate having an apertured portion formed therein, a sheave supported between said cheek platos, a crosshead having plvotal oonnection with said bottom cheek plate, a olosure member pivotally connected to said crosshead at one end and having selectiVe looking engagement with said top cheek plate at its other end, said olosure member having a grooved portion formed on said end having looking engagement with said top plate which grooved portion is adapted to pass through said apertured portion of said top cheek plate and engage said top cheek plate, and means, for looking said olosure member to said top cheek plate oomprising a spring member fiXed to said olosure member, and a stop fixed to saidspring member adj aoent the end of said olosure member and engageable with said olosure member andsaid aforementioned apertured portion in said top cheek plate. i

6. A snatch block having a. bottom'cheek plate, a top cheek plate having' an apertured portion formed therein, a sheave' supported between said cheek p1ates,-a crosshead having pivotal connection wi h saidbottom cheek plate, a olosure member pivotally connected to said orosshead at one 'end' and' having selectivo looking engagcment with said top cheek plate at its' other end, said olosure member having a grooved portion formed on said end having looking engagement, with said top cheek plate which grooved portion is adapted to pass through said apertured portion of said top cheek plate and engage said top cheek plate, and means for looking said olosure member to said top cheek plate comprising a spring member fixed to said olosure member and eXtending parallel therealong, and a stop fiXed to said spring member adjaoent the. end of said olosure member engageable with said olosure member and said af'orementioned apertured portion in said .top cheek plate for holding said grooved portion of said olosure member in engagement with said top cheek plate.

7 A snatch block having a sheave, means for permitting said snatch block tobe selec tively opened or closed with respect to said sheave oomprising an apertured portion, a olosure member having means thereon en gageable with said apertured portion' for holding said olosure member in a closed posi'- tion with respeot to said sheave, and means for positively looking said olosure member in a closed position with respeot to said sheave oomprising a yieldable member having a stop thereon adapted to eng'age said closure member and aperture in said apertured portion.

8. A snatch block having a sheave, means for permitting said snatch block to be selectiVely opened or closed With respect to said sheave comprising an apertured portion, a closure member having means thereon engageable With said aipertured portion for holding said closure member in a closed position With respect to said sheave, and means for positively looking said closure member in a closed position With respect to said sheave comprising a Spring member having a stop thereon adapted to engage said closure member and aperture in said apertured portion.

9. A snatch block having a sheave, means for permitting said snatch block to be selectively opened or closed With respect to said sheave comprising an apertured portion, a closure member having means thereon engageab-le With said apertured portion for holding said closure member in a closed position with respect t'o said sheave, and means for positively locking said closure member in a closed position With respect to said sheave comprising a Spring member fixed to said closure member, and a stop fiXed to said Spring member adjacent the end of said closure member, said stop being engageable With said closure member and aperture in said apertured portion.

10. A snatch block having a sheave, means for permitting said snatch block to be opened or closed With respect to said sheave comprising an apertured portion, a closure member having means thereon engageable With said apertured portion for holding said closure member in a closed position With respect to said sheave comprising a grooved portion on said closure member a-dapted to pass through the aperture in said apertured portion and engage said apertured portion, and means for positively locking said closure member in a closed position With respect to said sheave comprising a yieldab-le member having a stop thereon, said stop being adapted to engage said closure member and aperture in said apertured portion for holding said grooved portion of said closure member in cngagement With said apertured portion.

11. A snatch block having a sheave, means for permitting said snatch block to be selectively opened or closed With respect to said sheave comprising an apertured portion, a closure member having means thereon engageable With said apertured portion for holding said closure member in a closed posi- 'tion With respect to said sheave comprising a grooved portion on said closure member adapted to pass through the aperture in said apertured portion and engage said apertured portion, and means for positively looking said closure member in a closed position With respect to said sheave comprising a yieldable member secured to said closur'e member, and a stop fixed to said yieldable member adj acent the end of said closure member, said stop being engageable With said closure member and aperture in said apertured portion for holding said grooved portion of said closure mem- V adapted to pass through the aperture in said apertured portion and engage said apertured portion, and means for positively looking said closure member in a closed position with respect to said sheave comprising a leaf Spring member fiXed to said closure member and extending along said closure member beyond the end thereof and a stop fiXed to said leaf Spring member adjacent the end of said closure member, said stop being engageable With said closure member and aperture in said apertured portion of said snatch block for holding said grooved portion of said closure member in engagement With said apertured portion. A

Signed at Chicago, in the connty of Cook and State of Illinois, this 19th day of April,

ALFRED B. ESSELTINE. 

